水热处理提高了猪粪消化液的能量回收,改善了猪粪残渣的性能。

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Dachen Liao, Ke Sun, Chenyang Liu, Qiang Ye, Hailong Luo, Haipeng Sun, Qi Lu, Yili Yang, Ruo He
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引用次数: 1

摘要

从生物垃圾中回收能源对可持续发展的社会具有重要意义。本文采用水热法对猪粪消化液进行了酸化处理。研究了水热操作温度(130 ~ 250℃)、停留时间(15 ~ 90 min)和总固体(TS)浓度(10% ~ 20%)对还原糖收率的影响。其中,水热温度是影响还原糖收率的最重要因素,其次是TS浓度和时间。猪粪消化液的最佳水热条件为175.6℃,35.4 min, TS浓度为10%,还原糖产量为9.81 mg gTS-1。与不添加水解液相比,添加水解液可使猪粪厌氧消化产甲烷量提高21.6-50.4%。经高温处理后,粪大肠菌群数量和蛔虫卵死亡率等卫生质量得到改善。猪粪消化液中的抗生素磺胺甲氧嘧啶、土霉素、多西环素和磺胺氯dazine在高温下被分解,降低了环境风险。这些结果表明,水热法可以有效地回收畜禽粪便消化液中的能量,并提高剩余消化液的利用率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hydrothermal treatment enhances energy recovery from pig manure digestate and improves the properties of residues.

Energy recovery from biowaste is of high significance for a sustainable society. Herein, hydrothermal treatment (HT) was applied to valorize pig manure digestate. The effects of hydrothermal operational parameters, including temperature (130-250 °C), residence time (15-90 min), and total solid (TS) concentration (10%-20%), on reducing sugar yield were investigated in this study. Among them, hydrothermal temperature was identified as the most important factor influencing reducing sugar yield, followed by the TS concentration and time. The optimal hydrothermal conditions for the pig manure digestate were 175.6 °C, 35.4 min and a TS concentration of 10% with a reduced sugar yield of 9.81 mg gTS-1. The addition of hydrolysate could enhance methane production by 21.6-50.4% from the anaerobic digestion of pig manure than that without the hydrolysate addition. After HT, the hygienic quality, including fecal coliform number and ascaris egg mortality, was improved in the residual digestate. Antibiotics such as sulfamonomethoxine, oxytetracycline, doxycycline and sulfaclodazine in the pig manure digestate were decomposed during HT and decreased environmental risk. These findings indicated that the hydrothermal process might be an effective technique to recover energy from the digestate of livestock and poultry manure and to improve the residual digestate for subsequent utilization.

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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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